The US Government is being run by a Neocon cabal. They won't tell you what their principles are so I will. Since we are the world's only remaining superpower, we have the right, even the historical necessity of imposing our will on other nations in order to get them to do our bidding. Notice that this is in contrast to the dialectically opposite point of view which would say we should work side-by-side with other nations to improve our common lot. Naturally, the UN is anathema to them.
In the Neocon world view diplomacy is a sign of weakness. We indulge in diplomacy at our peril because other nations sensing we're weak will soon start trying to take advantage of us. Conflict resolution is also a sign of weakness. But war is necessary in order to impose our will on others. There is no conflict that can't be resolved by means of a military solution which is the most desirable way to resolve conflicts. Other countries, being weaker, would be wise to back down to us and do what we tell them to. As Nietzsche said, "A good war hallows any cause." The Nietzschean "Will to Power" necessitates that the US not shrink from its role as the world's most powerful nation and that role is to dominate the other nations and bend them to our will. As Nietzsche said: "What is good? All that heightens the feeling of power in man, the will to power, power itself. What is bad? All that is born of weakness. What is happiness? The feeling that power is growing, that resistance is overcome."
The Neocons have stated their ideals in the Project for the New American Century (PNAC). Their Statement of Principles asks the question: "Does the United States have the resolve to shape a new century favorable to American principles and interests?" In other words does the US have the "Will to Power," the will to dominate the world in such a way that is "favorable to American principles and interests"? Pre-emptive war is desirable because: "The history of the 20th century should have taught us that it is important to shape circumstances before crises emerge, and to meet threats before they become dire." The only language the rest of the world understands is the exercise of power. Therefore, if we don't exercise power responsibly, that is by ordering other nations around, they will soon take over and start ordering us around. In other words we will lose our freedom.
William Kristol, chairman and founder of the PNAC, is editor of "The Weekly Standard", a leading Neocon journal. Kristol was chief of staff to Vice President Dan Quayle under the first President Bush. Kristol had a lot to do with Republican strategy for "killing" the Clinton universal health care plan. In keeping with Neocon and Nietzschean philosophy that the strong should dominate the weak rather than work to improve their lot, their philosophy bears a strong resemblance to social Darwinism. In the microcosm, the family is considered the smallest unit of domination ruled over by a father with an iron will who demands complete submission much as the US demands submission not cooperation from the weaker nations of the world.
Part of the Neocon philosophy is to not tell the American people what they're really about and really up to. Bush's role is Salesman-in-Chief for the Neocon philosophy disguised in a form as to not arouse interest in their core beliefs but to instill fear in the American people to justify their putting the US on a perpetual war footing. A military solution is always preferable to a peaceful one. Notice the lack of an exit date on Bush's Presidential bust.